Discharge pipe for turbine pumps



Sgpt. 30 1924.

W. G. NOACK DISCHARGE PIPE FOR TURBINE PUMPS Filed March 23. 1923INVENTOR. Wad/Z291 G. Noa 01c BYQ A TTORNE Y Patented Sept. 30, 1924.

UNITED STATES WALTER G. NOAGK, 0F STOCKTON, CALIFORNIA.

DISCHARGE PIPE FOR TURBINE PUMPS.

Application filed March 23, 1923.

To all whom it may concern.

Be it known that I, l/VALrnn G". NoAoK, a citizen of the United States,residing at Stockton, county of San Joaquin, State of California, haveinvented certain new and useful Improvements in Discharge Pipes forTurbine Pumps; and I do declare the following to be a full, clear, andexact description of the same, reference being had to the accompanyingdrawings, and to the characters of reference marked thereon, which forma part of this application.

This invention relates to improvements in pumping equipment, especiallythat used in connection with deep wells, from which the water is raisedby a pump of the turbine type driven from the surface, and havingconsequently a vertical shaft extending from above the surface downthrough the discharge pipe to th pump. I

The water usually contains a certain amount of sand and other grittysubstance in suspension, which acts very deleteriously on the necessaryintermediate bearings of the pump drive shaft in the discharge pipes,

requiring that a special and expensive form of hearing be used if it isto stand up under the abrasive action of the grit for any length oftime.

The principal obj ect of my invention is to construct the discharge pipein such a manner that the gritty material in the water is kept away fromthe bearings, so that the latter may be made of any of the usual andrelatively inexpensive materials suitable for the purpose, without thenecessity of frequently replacing the same.

The use of oilless bearings for the shaft being made possible, the wateris kept from contamination with oil or grease, which would beobjectionable in the case of a water supply for ice making, or inpressure water systems for household purposes and human consumption.

A further object of the invention is to produce a simple and inexpensivedevice and yet one which will be exceedingly effective for the purposesfor which it is designed.

These objects I accomplish by means of such structure and relative.arrangement of parts as will fully appear by a perusal of the followingspecification and claims.

In the drawings similar characters of reference indicate correspondingparts in the several views.

Serial No. 627,181,

Fig. 1 is a vertical elevation, mainly in section, of a. deep well andpumping equipment therein, showing my improved form of discharge pipe.

Fig. 2 is an enlarged section coupling and shaft bearing unit.

Referring now more particularly to the characters of reference on thedrawings, the numeral 1 denotes the well having at the bottom a turbinepump 2 of usual character, the water raising mechanism of which isdriven by a vertical shaft 3.

The discharge line from the pump comprises piping 4: in suitable lengthsas is customary, the lengths being connected together by sleevecouplings 5 formed in which are centrally disposed bearing sleeves 6 forthe shaft 2, the sleeves being connected to the body of the coupling byarms or ribs 7.

The interior of the piping i is spirally grooved or rifled as at 8, thepitch. and depth of the grooves being of course designed to give themaximum efficiency for their purpose.

This purpose is to cause the water thrown upwardly into the dischargepiping from the pump to be given a whirling motion as it of a pipeascends which will cause any grit therein,

being heavier than the water, to be thrown toward the outer edge of thecolumn of water owing to the centrifugal action set up by 'the rotarymovement of the water. This causes the water in the center of thecolumn, and adjacent the shaft to be free of its abrasive impurities, sothat neither the shaft nor its bearings 6 are subjected to any morerapid wear than that naturally had by reason of the relative movementtherehetween.

To reduce the friction or resistance oifered to the upward movement ofthe water, the arms 7 of the bearings 6 are preferably set at a slantthe same as the pitch of the grooves, as clearly shown in Fig. 2.

Having thus described my invention, what I claim as new and useful anddesire to secure by Letters Patent is:

1,. In a discharge pipe for water pumps, continuous spiral groovesformed therein; the depth of said grooves being sufficient to impart awhirling motion to a column of water being pumped through the pipe butinsufficient to retard the flow of the water.

2. A discharge pipe for water pumps, said pipe having formed thereincontinuous and llO thrown away from the centernof the column of water.

3. In pump discharge piping having 'a centrally located shaft passingtherethrough bearings for the shaft interposed a't intervals in thepiping, and relatively shallow spiral groovesformed in the piping tocause the fluid foreed through the pipe to have a rotaryum0tion impartedtheretoywhereby'- to throw any solid foreign matter in the fluid awayfrom the bearings;

4. A discharge piping structure for pumps comprisinglengths of pipeformed with interiorspira-l grooves, couplings tor the pipe, shafthearings in the pipe, adjacent the. COU'PllDgS,QZLDCl QI'IHS connectingeach bearing to the bod of the adjacent coupling, said arms being set ona slant of substantially the same pitch as that of the grooves.

In testimony whereof I aflix my sip-nature.

